Change bunchspacing eras to the newer versions

[mark-grimes]

This pull request does two things, mainly just clearing up some old code:

• Moves the old bunchspacing25ns era to run2_25ns_specific (and same for 50ns versions).
• Stops cmsDriver trying to auto-detect the bunchspacing era from the --pileup option. User has to explicitly decide when choosing either --era Run2_25ns or --era Run2_50ns (can also choose Run2_HI but that's not relevant to this PR).

In principle this should be the last PR to replace the customisePostLS1 customisation, barring fixes for bugs found during validation. Validation will be presented in the 26/Feb/2015 reco meeting.

[cmsbuild]

A new Pull Request was created by @mark-grimes (Mark Grimes) for CMSSW_7_4_X.

Change bunchspacing eras to the newer versions

It involves the following packages:

Configuration/Applications
Configuration/StandardSequences
SimGeneral/MixingModule

@civanch, @nclopezo, @mdhildreth, @cmsbuild, @franzoni, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @Martin-Grunewald, @wmtan, @makortel, @GiacomoSguazzoni, @rovere, @VinInn, @appeltel, @cerati, @dgulhan this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[Dr15Jones]

Congrats on the era migration!

[mark-grimes]

@Dr15Jones

In principle this should be the last PR...

"In principle" is a pretty big caveat.

[davidlange6]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 2ebf4fc
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7926/2877/summary.html

[cmsbuild]

+1
Tested at: e6a98f8
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7926/2955/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7926/2955/summary.html